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P31 vs. WD_BLACK SN750

The P31 and WD_BLACK SN750 are two similar M.2 2280 solid state drives. You can find out what the main differences are in this comparison guide between the SK hynix and Western Digital storage products.

Quick Summary

The SK hynix Gold P31 is faster than the Western Digital WD_BLACK SN750 when it comes to maximum sequential reading, maximum sequential writing, maximum random reading and maximum random writing.

The SK hynix Gold P31 also has a better endurance rating when compared to the WD_BLACK SN750.

So, if you are looking for the fastest speeds and best endurance, then we recommend getting the P31.

On the other hand, the WD_BLACK SN750 is the only one of these products to offer 2 TB and 4 TB capacities options. So, if you need more space, then the SN750 may be the better choice.

If you are interested, you can purchase either of the aforementioned internal SSDs on Amazon with the following links:

You can see how the WD_BLACK SN750 compares to the WD_BLACK SN750 SE with this article.

P31 vs. WD_BLACK SN750 Comparison Chart

You can check out Seeking Tech’s comparison table for the P31 and WD_BLACK SN750 below.

 SK hynix Gold P31 Solid State DriveWestern Digital WD_BLACK SN750 Solid State Drive
Capacity Options500 GB

1 TB
250 GB

500 GB

1 TB

2 TB

4 TB
Model Numbers500 GB SK hynix Gold P31: SHGP31-500GM-2

1 TB SK hynix Gold P31: SHGP31-1000GM-2
250 GB WD_BLACK SN750: WDS250G3X0C

500 GB WD_BLACK SN750: WDS500G3X0C

1 TB WD_BLACK SN750: WDS100T3X0C

2 TB WD_BLACK SN750: WDS200T3X0C

4 TB WD_BLACK SN750: WDS400T3X0C
Form FactorM.2 2280M.2 2280
Maximum Sequential Read Speed500 GB SK hynix Gold P31: Up to 3500 MB per second

1 TB SK hynix Gold P31: Up to 3500 MB per second
250 GB WD_BLACK SN750: Up to 3100 MB per second

500 GB WD_BLACK SN750: Up to 3430 MB per second

1 TB WD_BLACK SN750: Up to 3430 MB per second

2 TB WD_BLACK SN750: Up to 3400 MB per second

4 TB WD_BLACK SN750: Up to 3400 MB per second
Maximum Sequential Write Speed500 GB SK hynix Gold P31: Up to 3100 MB per second

1 TB SK hynix Gold P31: Up to 3200 MB per second
250 GB WD_BLACK SN750: Up to 1600 MB per second

500 GB WD_BLACK SN750: Up to 2600 MB per second

1 TB WD_BLACK SN750: Up to 3000 MB per second

2 TB WD_BLACK SN750: Up to 2900 MB per second

4 TB WD_BLACK SN750: Up to 3100 MB per second
Maximum Random Read Speed500 GB SK hynix Gold P31: Up to 570K IOPS

1 TB SK hynix Gold P31: Up to 570K IOPS
250 GB WD_BLACK SN750: Up to 220K IOPS

500 GB WD_BLACK SN750: Up to 420K IOPS

1 TB WD_BLACK SN750: Up to 515K IOPS

2 TB WD_BLACK SN750: Up to 480K IOPS

4 TB WD_BLACK SN750: Up to 550K IOPS
Maximum Random Write Speed500 GB SK hynix Gold P31: Up to 600K IOPS

1 TB SK hynix Gold P31: Up to 600K IOPS
250 GB WD_BLACK SN750: Up to 180K IOPS

500 GB WD_BLACK SN750: Up to 380K IOPS

1 TB WD_BLACK SN750: Up to 560K IOPS

2 TB WD_BLACK SN750: Up to 550K IOPS

4 TB WD_BLACK SN750: Up to 520K IOPS
Endurance500 GB SK hynix Gold P31: 500 TBW

1 TB SK hynix Gold P31: 750 TBW
250 GB WD_BLACK SN750: 200 TBW

500 GB WD_BLACK SN750: 300 TBW

1 TB WD_BLACK SN750: 600 TBW

2 TB WD_BLACK SN750: 1200 TBW

4 TB WD_BLACK SN750: 2400 TBW
Reliability1,500,000 hours MTBF1,750,000 hours MTTF
Warranty5-year warranty5-year warranty
PricingCheck price on Amazon.Check price on Amazon.

Capacity Options

The WD_BLACK SN750 offers more capacity options, including the bigger 2 TB and 4 TB versions, when compared to the SK hynix Gold P31.

You can take a look at the available capacities of these storage products below:

SK hynix Gold P31:

  • 500 GB
  • 1 TB

WD_BLACK SN750:

  • 250 GB
  • 500 GB
  • 1 TB
  • 2 TB
  • 4 TB

Model Numbers

You can check out the model number associated with each capacity of these two SSDs below:

  • 500 GB SK hynix Gold P31: SHGP31-500GM-2
  • 1 TB SK hynix Gold P31: SHGP31-1000GM-2
  • 250 GB WD_BLACK SN750: WDS250G3X0C
  • 500 GB WD_BLACK SN750: WDS500G3X0C
  • 1 TB WD_BLACK SN750: WDS100T3X0C
  • 2 TB WD_BLACK SN750: WDS200T3X0C
  • 4 TB WD_BLACK SN750: WDS400T3X0C

Form Factor

Both the SK hynix Gold P31 and WD_BLACK SN750 use the M.2 2280 form factor.

Maximum Sequential Read Speed

When you compare the same capacity options, the 500 GB and 1 TB versions of the SK hynix Gold P31 are 70 MB per second faster, or 2.04% faster, than the 500 GB and 1 TB versions of the WD_BLACK SN750 at maximum sequential reading.

You can find the maximum sequential read speeds below:

  • 500 GB SK hynix Gold P31: Up to 3500 MB per second
  • 1 TB SK hynix Gold P31: Up to 3500 MB per second
  • 250 GB WD_BLACK SN750: Up to 3100 MB per second
  • 500 GB WD_BLACK SN750: Up to 3430 MB per second
  • 1 TB WD_BLACK SN750: Up to 3430 MB per second
  • 2 TB WD_BLACK SN750: Up to 3400 MB per second
  • 4 TB WD_BLACK SN750: Up to 3400 MB per second

Maximum Sequential Write Speed

When it comes to maximum sequential writing, the 500 GB SK hynix Gold P31 is 500 MB per second faster, or 19.23% faster, than the 500 GB WD_BLACK SN750.

The 1 TB SK hynix Gold P31 is also 200 MB per second faster, or 6.67% faster, than the 1 TB WD_BLACK SN750.

You can check out the maximum sequential write speed specifications below:

  • 500 GB SK hynix Gold P31: Up to 3100 MB per second
  • 1 TB SK hynix Gold P31: Up to 3200 MB per second
  • 250 GB WD_BLACK SN750: Up to 1600 MB per second
  • 500 GB WD_BLACK SN750: Up to 2600 MB per second
  • 1 TB WD_BLACK SN750: Up to 3000 MB per second
  • 2 TB WD_BLACK SN750: Up to 2900 MB per second
  • 4 TB WD_BLACK SN750: Up to 3100 MB per second

Maximum Random Read Speed

For maximum random reading, the 500 GB SK hynix Gold P31 is 150K IOPS faster, or 35.71% faster, than the 500 GB WD_BLACK SN750.

The 1 TB SK hynix Gold P31 is 55K IOPS faster, or 10.68% faster, than the 1 TB SK hynix Gold P31.

You can take a look at the maximum random read speed specs below:

  • 500 GB SK hynix Gold P31: Up to 570K IOPS
  • 1 TB SK hynix Gold P31: Up to 570K IOPS
  • 250 GB WD_BLACK SN750: Up to 220K IOPS
  • 500 GB WD_BLACK SN750: Up to 420K IOPS
  • 1 TB WD_BLACK SN750: Up to 515K IOPS
  • 2 TB WD_BLACK SN750: Up to 480K IOPS
  • 4 TB WD_BLACK SN750: Up to 550K IOPS

Maximum Random Write Speed

As for random writing, the 500 GB SK hynix Gold P31 is 220K IOPS faster, or 57.89% faster, than the 500 GB SK hynix Gold P31.

The 1 TB SK hynix Gold P31 is also 40K IOPS faster, or 7.14% faster, than the 1 TB WD_BLACK SN750.

You can find the random write speeds below:

  • 500 GB SK hynix Gold P31: Up to 600K IOPS
  • 1 TB SK hynix Gold P31: Up to 600K IOPS
  • 250 GB WD_BLACK SN750: Up to 180K IOPS
  • 500 GB WD_BLACK SN750: Up to 380K IOPS
  • 1 TB WD_BLACK SN750: Up to 560K IOPS
  • 2 TB WD_BLACK SN750: Up to 550K IOPS
  • 4 TB WD_BLACK SN750: Up to 520K IOPS

Endurance

When you compare the same capacities, the SK hynix Gold P31 can also last longer than the WD_BLACK SN750 when it comes to endurance as you can write more data.

You can find the Terabytes Written specifications below:

  • 500 GB SK hynix Gold P31: 500 TBW
  • 1 TB SK hynix Gold P31: 750 TBW
  • 250 GB WD_BLACK SN750: 200 TBW
  • 500 GB WD_BLACK SN750: 300 TBW
  • 1 TB WD_BLACK SN750: 600 TBW
  • 2 TB WD_BLACK SN750: 1200 TBW
  • 4 TB WD_BLACK SN750: 2400 TBW

Reliability

While the WD_BLACK SN750 has a longer reliability rating than the SK hynix Gold P31, it lacks the repairability of the P31

You can find the reliability ratings for both below:

  • SK hynix Gold P31: 1,500,000 hours MTBF
  • WD_BLACK SN750: 1,750,000 hours MTTF

Warranty

The SK hynix Gold P31 Solid State Drive and Western Digital WD_BLACK SN750 Solid State Drive each comes with a 5-year warranty.

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